Pulp beater



Patented Oct. 10, 192% PULP BEATER.

APPLICATION FILED AUG-25. 1921.

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application filed August 25, 1921. denial N0. llfithldt,

To all whom it may concern:

Be it known that l[, Lnonam E. Ranono,

at Erie, in the county of Erie and State of Pennsylvania, "have invented certain new and useful Improvements in Pulp Beaters; and I do hereby declare the following to be a full, clear, and exact description of'the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, forming part of this specification.

My invention relates to paper pulp beaters in which the pulp is placed in a vat and caused to circulate through the beating mechanism until the fibres are thoroughly masticated and ready for the paper machine. I I

The objectof my invention is to rovrde a beating cylinder whlch co-acts wit a sta tionary member around the entire c1rcurnference of the heating cylinder and combining it with a vat in such a manner that the pulp will circulate from the vat through the beating mechanism and thence back into the vat, thus increasing the beating capacity of the apparatus, aswell as reducing the demand for power in its operation.

In carrying out the object of my invention ll provide a vat, of suitable size to contain a batch of stuff, which has an opening in the bottom thereof which communicateswith the housing of a beating cylinder so th the stud in the vat will flow into the ater axially and enter between the circumference of the beating cylinder and the housing, and be acted on by the entire circumference of the cylinder, and will be discharged from the beater through a suitable conductor back into the vat.

These and other features of my invention will be hereinafter fully described and pointed out and are illustrated in the accompanying drawings, in which-'- i igure 1, is a central section of a beating ap aratus embodying my invention.

igure 2, is a transverse section on the line 2-2 in Fig. 1.

Figure 3, is a horizontal section of a portion of the same on the line 3-3 in Fig. 1, lookin downward,

In t ese drawings A indicates a vat for the receptionof pulp and water, commonly called Stu, said vat having an opening "her E.-

' A in the bottom thereof. Secured to the v bottom of the vat, is'a housing B of a beata citizen of the United States,- residing machine; said housing having prefer 1n ab withcutting bars b.- The lower end of this houslng is rovided with an impeller cham- W ithin this housin I place a cyl inder C, which is preferahly conical in shape, to correspond with the housing B, this cylinder C'being provided with spaced cutting bars 0. Below the cuttingbars the cylinder is preferably provided with impeller blades 0, which'act to force the stuff, after it passes downward through the cutting bars, forward throu h the return pipe D and thence back into t e vat. The heating cylinder is provided with a shaft E, which extends downward through an opening in a closure plate E, secured %pon the lower or open end of the housing The shaft E is mounted in suitable bearings E, supported on brackets E secured on the plate 15'. Upon the shaft E l place a driving pulley by means of which power is applied in the usual manner. Under the lower end of the shaft E is placed a thrust bearing G, which is engaged b an justing screw H, which is mount bar, H secured to the brackets E so that by means of the screws H, the conical beater can be raised or lowered with relation to the stationary cutting bars I), in the housing Within-the vat Av is placed a shaft J,

which carries a suitable agitator frame J with which the mass of stud in the vat can be kept thoroughly mixed before it enters the beater mechanism.

In operation by gravity, into the beating machine, wherein the cutting bars 6 and 0 around the entire inner perimeter of the housing B and circumference of the conical mi 0 act to thoroughly masticate the stud; the conical 100 shape of the beating cylinder tending to aid the downward flow of the stud, and the impeller wings 0" on the cylinder, finally forcing the stud to enter the pipe D and flow therethrough back to the vat A. In this lot circulation the total elevation of the stud by the mechanism is practically only the distance the pipe D extends above the level of the stud in the vat A, which, added to the friction of the stuff in passing through the 11d pipe D represents the power necessary to maintain circulation of the stud through a conical inner surface, which is filled 60 shape of the 65 in a cross- 85 the stud" enters preferably,

the apparatus, which is much less than the power expended to maintain the circulation in vat heaters in ordinary use, so that the most of the power necessary to operate my improved beater apparatus is exerted upon the beater cylinder, and is used only in the cutting process, and as the entire cylinder is constantly performing the cutting operation the time consumed in beating a predetermined mass of pulp by my invention is very materially shortened.

Having thus fully described the construction and operation of suitable mechanism to embody my invention, I do not desire to limit myself to the exact construction and arrangement shown, but what I claim as new is 1. In an apparatus of the class decribed, a beater having a conical grinding member therein, and adapted to grind around its entire surface, a vat ada ted to contain a batch of stuff above sai beater ha an opening in the bottom thereof communicating with the intake end of said beater, a conductor pipe leading from said beater back to said vat adapted to receive stufi from said beater and convey it back to said vat.

2. In an apparatus of the class described, a vat having an opening in the bottom thereof, a rotating agitator mounted in said vat, a beater under the opening in said vat and communicating therewith, and a conveyor adapted to receive stuff from said beater and return it to said vat.

In testimony whereof I afiix my signature.

LEONARD E. RANDEGKER. 

